Recorder having suppression of spacing control of printing without suppression of similar control for punching



Feb. 17, 1948. HREIBER 2,436,230

RECORDER HAVING SUPPRESSION OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING Original Filed July 29, 1943'7 Sheets-Sheet l INVENTOR ALBERT H. REIBER, DECEASED EMILY Y. REIBER,EXECUTRIX ATTORNEY Feb. 17, 1948. H A. H. REIBER 2,436,230

RECORDER HAVING SUPPRESSION OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING Original Filed July 29, 19437 Sheets-Sheet ATTORNEY Feb. 17, 1948. A. H. RElBE-R 2,436,230

RECORDER HAVING SUPPRESSION OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING Original Filed July 29, 19457 Sheets-Sheet 3 FIG. IO 9 INVENTOR ALBERT H. REIBER, DECEASED EMILYY.REIBER, EXECUTRIX ATTORNEY Feb. 17, 1948.

A. H. REIBER 2.436.230 RECORDER HAVING SUPPRESSION OF SPACING CONTROL OFPRINTING WITHOUT SUPPRESSION OF SIMILAR CONTROL FOR PUNCHING v'7Sheets-Sheet 4 Original Filed July 29, 1945 FIG. I1

INVENTOR ALBERT H. RElBER,DEcEAsEo FIG. I?)

EMILY Y. REIBER, EXECUTRIX BY/ AT RNEY Feb. 17, 1948. A. H. REIBER2,436,230

RECORDER HAVING SUPPRESSION OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING Original Filed July 29, 1945'7 Sheets-Sheet 5 FIG. I9

n mlm ilnlunnnl.

' r i1 MIN Illliliig- ALBERT H. REIBER, DECEASED EMILY Y. REIBER,EXECUTRIX /7 15' ATTOR EY Feb. 17, 1948. A. H. REIBER 2,436,230

RECORDER HAVING SUPPRESSION. OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING Original Filed July 29, 19437 Sheets-Sheet 6 I 1- n 258 FIG 2| 1 a 1: 71 1 E85 2 s12 z a u 275 zen I1 1 272 267 2B7 2 3 fllllll \llllilhl INVENTOR ALBERT H. REI BER;DECEASED EMILY Y REIBER, EXECUTRIX BY /f? 25 ATTOR EY Feb. 17, 1948. A.H. REIBER 2,436,23

RECORDER HAVING SUPPRESSION OF SPACING CONTROL OF PRINTING WITHOUTSUPPRESSION OF SIMILAR CONTROL FOR PUNCHING' Original Filed July 29,1945 7 Sheets-Sheet 7 u IIIIIIIA iNVENTOR ALBERT H. REIBER, DECEASEDEMILY Y. REIBER, EXECUTRIX AT TO EY Patented Feb. 17, 1948 I UNITEDPATENT er -CE 'nac'o'nncn HAVING SUPPRESSION or SPACING CONTROL, OFPRINTING wrrnonrsurrnnssron 0F SIMILAR 'CONTROL'FORPUNCHING Albert glllteiber, deceased, late of Evanston, 111,, by-Emily I, Reiber,executrix, Evanston, 11i assignor to Teletype Corporation, Chicago,111.,

g a corporation of Delaware Original application July 29,-1'943, SerialNos 498,551r Divided Mid this application February 26 1944, eiial N0.524,039

This invention relates and more particularly to combination. printingand perforating apparatus for the-substantially simultaneous preparationofa printed record and a, perforated record. This deviceis an initiatingrecorder by printingand-punching, using a textual-error correcting meansfor both records, the whole device being at a sending station. However,the printing-andepun-ching meansonly'can be used in a receiver atauremote station, some transmitting set of contacts being used at thesending station. I Z

This application is a division of copending application Serial No.496,551, filed July 29, .1943.

The principal object of the invention isthe. provision of means for"efiecting corresponding Reiber 2,296,874. The device according to thepresent invention has many parts similar to the parts in said patents,but the instant device is at the sending station and is operated by itsown keyboard which by means of a short "cable controls the sending ofcode-impulses to its selector magnet. Said patents disclose a pageprinter,

but the apparatus according to the present vinvention contemplatestheaddition thereto of a tape perforating device which is connected to andcontrolled by the selector mechanism of-said page printer, so thatsubstantially simultaneous records are. made on the page material and onthe tape. In such combinationaprinting and perforthe invention is toprovide II -Claims. (015164-413;

to recording apparatus.

operation of the perforated tape. Then, when this operation isperformedathe record on the page corresponding to the deleted record onthe tape iscancelled by printing "thereover a-cancellation character. I

Another feature of the present invention :c'on- Q sists in providingmeans, effective under certain predetermined conditions, to suppress theback spacing of the printed copy when the tape is being back spaced, forthe'reason that when the letters or figures shift signals are perforatedin the tape the platen remains quiescent, and

therefore when the tape is to be backspaced it is not necessary tobackspace the platen when the tape is back spaced through theshiftc'o'de com binations perforated therein,

A more complete understanding of the present invention maybe had iromthe following description whentake'nin conjunction with the accom-'panying "drawings wherein like reference numerals are used to designatesimilar parts throughout and wherein: A 7 I Q Fig. 1 is air'o'nt*elevational view of the printer shown in the above-mentioned 'R'eiberpatent, modified according tothe present invention:

Fig. 2 is a partial sectionaliplan view of the printer shown in Fig. 1disclosing the present in- 'vention;

9 in Fig. 6;

ating devices, it'is desirable to provide means for correcting the pagerecord'and the, tape -perforated record substantiallysimultaneously,thel-at- 4 ter a little before the former. In performing this operationthe tape record'is back spacedand after back spacing a suflicientnumber; of characters representing the to be-correc'tedi material, thetape is again forwardspaced, 'an'd'the back spaced characters arethencancelled by; perforating, thereover a rubout signal. To inake therecord on the page agree with the perforated ream-ache present inventionprovides means ror substantially "simultaneously back spacing theprinted record in correspondence with the: back spacing Fig. 3 is 'apartial sectional view o'fthe punch block to show operation-ofthe'pawls'of the back spacing mechanism for the punched tape; I I Fig.4'i5 a View showing one ortne efiec tive po sitions of the selectormembers;

Fig. 5 is a view showing a seccnd effective position oftheselector'niembers; I I

Fig. 6 is a front elevational view "of the back space indicator andkeyboard lock actuat'in mechanism of the presentinvention;

'- Fig. 7 is a elanfview'or the mechanism shown Fig. "8 is a sideelevaticn-al view, partly in sectioi'ifof the mechanism shown in Figs. 6and 7;

Fig. 9 is a fragmentary perspective view of mechanism to suppress theback spacing operation when the platen is in its beginning-of-linefposition;

Fi 10 is a sectional view taken on line Ill-Iii f F 6; v

Fig. -11 is a sectional plan view of a modification of the perforatingdevice whereby the back spacing of the platen of the page printer issuppressed under certain operating conditions; 5

Fi 12 is aside elevational view of the modification showninFig. 11; a

Fig. 13 is a front elevational view of the modiflcation shown in Fig;11; Y

Fig. 14 is a perspective view of the sixth punch and sensing pinemployed in the modification shown .in Fig. 11;

Fig. 15 is a sectional plan view of another modiflcation of theinvention for suppressing the back spacing of the platen while the tapeis back spaced;

Fig. 16 is a side elevational I view of the modi fication shown in Fig.15;

Fig. 17 is a front elevational view of the'modification shown in Fig,15;

Fig. 18 is a sectional plan view of the modification shown in Fig. 15,illustrating the sensing mechanism in one of its operating positions;

Fig. 19 is a sectional plan view of the modification shown in Fig. 15,showing a second operating position of the sensing mechanism;

Fig. 20 is a fragmentary plan view of a further modification of theinvention for suppressing the back spacing of the platen when the tapeis back spaced; I

Fig. 21 is a side'elevational view of the modification shown in Fig. 20;

Fig. 22 is a front elevational view of the modiflc'ation shown in Fig.20;

Fig. 23 is a sectional plan view of the modifi- Fig. 27 is a sectionalView taken substantially Fig. 28 is a. sectional plan view of the punchblock showing as another modification a luminous indicator associatedtherewith; and

Fig. 29 is a front elevational View of the device shown in Fig. 28..

Having reference to Fig. 1 of the drawingathe numerals and I2 denotegenerally the typing unit and the keyboard transmitting unit,respectively, of the printing telegraph apparatus shown intheaforementioned Patent No. 2,247,408. The keyboard apparatus comprisesa base portion l3 on which is mounted the transmitting contact assemblyM, which comprises a plurality of transmitting contact springs l5controlled by a corresponding plurality of gooseneck levers l6 pivotedat I! which are controlled sequentially by a series of cams, asdisclosed in Reiber Patent No. 2,296,874; Contacts |5 areelectricallyconnected by cable ID to selector magnet 35.

The typing or printing unit H comprises a platen l8 which is :moved in-arightward and leftward directlonr-(as viewed in=Fig.- ll with respecttoatype-wheel |9.' The normal positionz'of type 1 wheel. I9 is belowthe, printingline or level, and during the printing operation it iselevated so as to bring the character elements located upon. theperiphery thereot into position to effect printing in a line upon a;page associated with the cylindrical platen l8. Having reference to Fig.2, the printing mechanism comprises three vertical shafts 2 22', and 23,which are'suitabl y j'ournaled in the printing apparatus. Shaft 2|supports'a code disc'sele'ctor mechanismi' l' ior'determining theprinting position of the type wheel, the func- 4 tion controllingabutment pins 25, as well as the type'wheel Is." The shaft 22gc'arriesvarious cams among which-arethe printing cam and the spacing cam.

Just above the point at which shaft 22 enters thelower bearing block 26,said shaft has secured thereto a gear.2.|; An electric motor (not shown)drives a pinionwhich meshes with gear 21 so that the shaft 22 to whichthe gear 21 is secured, is continuously rotated. It may be added at thispoint that a gear 28-(Fig. 1) carried by a stub shaft meshes with gear21, and that a spiral g ar 29. also secured to the stub shaft mesheswith a gear 3| carried by the transmitter shaft 32. Thus rotationisimparted to the transmitting distributor shaft 32 from the motor pinionthrough ries of impulses representing a signal combination preparatoryto setting T-levers 36 in accordance with the signal combination; Eachof the T-levers 36 engages one arm of a transfer bell crank 31,individual thereto, the other arm of which is articulated to one of thenotched code discs of the code disc selector mechanism 24.

The code disc-selector mechanism 24 has a circular arrangement ofvertically positioned stop pins 38 which project through slots in thetopmost plate of the mechanism. Stop pins 38 are biased inwardlyradially of the code disc selector mechanism and near theirupper endsthey rest against the edges of the shiftable notched code discs as isfully described in the Reiber Patent No. 2,296,874. The notching of thecode discs is r such that for any permutative setting of the discsalignment of notches under the influence of its biasing spring, itsupperend moving inwardly. A

type wheel stop arm (not shown) fixed to the 45 type wheel shaft 2| isof such length that in revolving it just clears'those of the stop pins33 that are held in th'eirbut'ermost positions by the code discs, butfinds blocking its path any pin 38 which has entered an alignment ofnotches in the periphery of the code discs; The type wheel shaft 2|extends downwardly throughthe code disc selector mechanism 24 coaxially'thereof and receives a continuous torque from'the driving motor throughany convenient means, such as 'a gear carried by the shaft 2| andconnected thereto by friction discs, the gear being continuously in meshwith the motor pinion. With this arrangement, the shaft 2| is alwaysprepared to rotate and is free to do so when any stop pin 38 which hasbeen previously selected is moved out of the path of the stop armupontheresetting of the code discs. With this arrangement, shaft 2|maybe arrested in an angular position ,inwhlch the stop arm'encounters'a stop pin 38.

The front portion 39 (Fig. ,,1 of--the primary foundation castingof thetyping unit II has 58- curedthereto spaced .brackets. 4| and 42. The

. shaft 23 isrotatably' supported in vertical position between brackets4| and- 42. Shaft-23 hassecured thereto near-the lower end a gear-43which permanently meshes with a gear 44 supported by gear 21a's'secured-ther'eto by any desired means, such as screws.=. Gear 43is'cooperatively related with ai'posltive engagementlclutch mechanism,

indicated generally as (Fig, :1 ).;-which governs the rotation ofacamsleeve 4'6. 7

The cam sleeve dfizsupports 'thertrans'fer camrfl, the type 'wheel shiftcam -41 and ra -double .rgrooved face :cam'4'9 which controls .theoperation of the perforating mechanism. The direction of rotationof camsleeve 46 is counterclockwise, and cam 48,1n being rotated, imparts*clockwiserrotation to the cam follower lever'5l audits lockingextension-'52. The follower 'lever'fil is mounted on -a pivotrshaft 53suitably carried in the printer structure.

Mounted "onshaftlz is a channel or box cam 54,:theicamtgroove 55 ofwhich receives the follower "roller 56 rotatably mounted on a bell cranklever 51 rockably mounted on the pivot shaft 58. ;A lever 59 is alsorockably mounted upon the shaft 58 and is secured at itsiorward 'end tothe cam operated bell crank lever '51 .by a clamping bolt 6| whichpasses through aslot (not shown) in the bell cranklever '51. said slotprovides ad,- justability in the clamping together of the levers '9 and51." The lever 59 is effective in the eonditioningrof functions whenthey are selected. As described in U. S, Patent No.2,296,874-thexselection of functions is controlled in accordance withcertain stop positions of the typewheel, and the lever 59 is providedlior efiecting response of the function conditioning or performingmechanisms;

Such means has been provided on the type wheel shaft 2| and comprises aplurality of index pins or abutment pins disclosed in various horizontalplanes and in various radial positions with respect to the typewheel.For cooperationwith the index pins 25 there are provided a plurality ofsuperposed levers '63ipivotally mounted on apivot pin 64' carried at therearmost end of. lever 59.

A spacing pawl 6-4 is articulated to the pin carried in the end of abell crank-lever 60 through a spring yield connection comprising slot66, spring 6'! and a guide'pin B8; The pivot pinenters the slot 65 andis urged to the forward "end of the slot by the compression spring 61The pin 65 is retained in the slot inside the convolutions of the spring61 and prevents the spring from escaping from the slot. The normalmovement of the pawl 64 is reciprocatory due to the rocking of thebellcrank lever 60 about acam (not shown), but if the movement of the pawlis blocked as it may be under certain circum-' stances, the pin 65 maymove within the slot and the spring 61 will take up the movementimparted by the cam and will restore the pin 65 to the forward end ofthe slot 66 when the follower roller 56 has escaped from the highestportion of cam 54. The pawl 64 has at its opposite end a ratchetengaging prong 69 which engages a spacing ratchet H to impartcounterclockwise rotation thereto as the pawl 64 is reciprocated. Thepawl sponding to the reciprocation of the spacing pawl '64. Now, as thecarriage I8 is stepped for'letter spacing, it tensions the carriagereturn spring for= a carriage return operation. A retaining pawl 15pivotally mounted at 16 and urged in a counterclockwise direction by aspring 11 engages one after another of the teeth of the ratchet H and Aa V v retains the ratchet andthus the platen carriage "76 "shouldered to-cooperate with theinwardly di- 6 inthel'successive positions to whichthey are advaricedbythepawlfl. l

-saccording tothe present invention the T.-1evers Bi bf the selectormechanism 33 are arranged to control-alsothe selective operation of aperforating mechanism provided for the purpose of producing a perforatedrecord on atape correspond ing-tothe printed record made on the page. Toachieve this-result a perforating device is provided at'the forwardupper right-hand portion of the typing unit II, as indicated in'F'ig. 1,This perforating :device is indicated generally by' the numeric-8|.

The locking extension 52 cooperates with a plu: rality or levers 82pivoted on 83 to control'th'e selective positionmen't of a correspondingplurality of interponents 84, each interpohent fi l being pivota'ilyarticulated 'to the lever 82. As the cam i'ollower 51 isrotatedclockwise by its cam 48, its locking extension 5'2'acts uponprojections 85iniividual to levers 82 to rotate the leversazcounterclockwise a predetermined angular amount 'sullicient tobring "theshoulder 86 of the levers '82 out of the a'rcu'ate path of theextremities are: the 'T-l'evers '36, so that when the T-levers 36 arerocked =counterclockwise during the selective positionm'ent thereof, theextremity 8? is rotated intothe path of the shoulder 86. When thelockin-g extension 52 is again rocked or rotated counterclockwise to theposition shown in Fig. 2,

the shoulders 86 of certain ones of the levers 8 2 will be blocked byth'e extremities 81 of certain levers 36, and thus levers 82 areprevented from rotating in a clockwise direction under the influ- -=enceor individual springs 88, While others of the levers flz'which are notblocked by the T-leve'rs '35 will be rotated back to their clockwiseposition by their springs 88, as indicated in Fig, 2; indicatedin Figs.'2', 4, and 5, various selective positions of the levers 82 andinterponents Mare illustrated;

The perforator 81 comprises a set of punches 89 movable "through a guideplate 9! and coacting with a dieplate 92 to perforate a tape '93. Theinterponen'ts 84 are provided with projections 94jso-that when an'interponent 84 is selected and moved rightwardly, as viewed in Fig. 2,the projection 94will align with the punch 89 to cause it to perforatethe tape when the punch hammer 95 is rocked about the pivot 9'6. Thepunchhamm'ertt is provided with an arm 9-7 which is pivotally'articulated to one arm of a punch operating lever98, theotherarm ofwhich is provided with a cam follower roller which 'cooperateswith a camgroove in cam 49. Lever 98 ispivotally mounted on a pivot shaft to towhich is also piv-otallycarried a lever ii. To the end "of one arm oflever Nil is mounted a'follower roller which cooperates with a camgroove in the :bQX cam 49, and at the other end of the other arm oflever IOl is pivotally mounted'a pawl member 102 which is normallybiased counterclockwise by a spring me into cooperative e'ri- *gagementwith a tape feed ratchet I04 (Figs).

For each cycleof rotation of cam 49, the levers 98 and I'll! "are rockedthrough a single reciprocatory movement to effect correspondingmovements of the punch hammer 95 and pawl 1'92,

respectively. -'The hammer '95 is provided with a portion H35 whichguides the extremities of the 'interponents" 8'4, and also imparts theoperating movement thereto which causes the punches 89 to perforate thetape 93 if a projectionti iregister-s with a punches. The punches 89"are also ing movement of the tape.

oted at H9 (Fig. 3). an arm I2I which is caused to bear against the sideof space bar II2 by the action of a spring rected portion of the memberI to provide a means for stripping or withdrawing the punches 33 fromthe tape 93. When the punch hammer 95 is operated to perform a punchingoperation, the pawl I02 is moved forwardly (as viewed in Fig. 2) toengage a tooth on the ratchet I04 and when the punch hammer and pawl aremoved in the opposite direction the pawl I02 will engage the ratchettooth and rotate the ratchet I04 one angular step corresponding to acharacter spac- The ratchet I04 is integrally associated with the feedroll shaft I06 which carries thereon (as viewed in Fig. 1) a peripheralseries of feed pins I01. Carried on the feed rollshaft IOB'is a detentstar wheel I08 with which is associated a detent jockey I09.

The present invention also provides an arrangement for back spacing thetape 93 which is at the same time effective to impart reverse movementto the platen I8 corresponding to the back spacing movement of the tape.Carried in the punch block III is a back space bar I12 having at itsforward end a. finger piece I I3. The

bar H2 is also supported behind the punch block in a bearing H4. The barH2 is shouldered at I I5 and a spring H6 is compressed between thebearing H4 and shoulder M5 to hold -thebar II2 normally in its forwardposition. A plate III is rotatably mounted on the feed roll shaft I06and is arranged to be pivotally articulated at I to the back space barII2. With this manner of connection, the plate I II is rotatedcounterclockwise, as viewed in Fig. 3, when the back space bar H2 isactuated rearwardly upon pressing the finger piece H3 and when the barH2 is urged forwardly by the spring H8, upon release of the finger onthe finger piece H3, the

,plate II I will be rotated clockwise to the position shown in the Fig.2. a

The plate II I carries a pawl member I I8 piv- Pawl II 8 is providedwith I22 which continually tends to cause pawl II8 to rotate in acounterclockwise direction about pivot H9. However, in the positionshown in Fig. 3, the spring I22, in tending to rotate the pawl II8 so asto cause the end I2I thereof to bear Now, when thespace bar tate theplate I I! in a counterclockwise direction. In so doing, the pivot I I9is also moved counter- .clockwisewith the plate III away from bar II 2so that the spring I22 is enabled to rotate the pawl II8counterclockwise to bring the tooth of the pawl II8 into engagement withthe .teeth of the ratchet wheel I23. This is made possible by the factthat the pivot I I9 is moved farther away from the side of the bar] I 2so as ,to permit the pawl II8 to be rotated'since the arm I2I is heldconstantly in engagement with the side of the bar II2 as the pivot H9 ismoved with the plate I I1. Then, as the bar H2is urged farther in therearward direction, the pawl II3 "I will rotate the ratchet I23counterclockwise, thus causing the feed roll I03 to rotatecorrespondingly to move the tape in a reverse direction (or rlghtwardly,as shown in Fig. 2). However, to

enable the performance of the back space operation, it is necessarytohold thefeed pawl I02 tion I25 which is adapted to engage the pawl I02as the plate III is rotated counterclockwise and in this mannerdisengages the pawl I02 from the ratchet I04 just prior to theengagement of pawl II8-with ratchet I23.

It is a feature of the present invention to cause the platen I8 to beback spaced in accordance with the back spacing operations applied totape 93. To accomplish this result, the backspacing bar H2 is extendedrearwardly and is pivotally connected to one'arm of a bell crank leverI26,

pivotally mounted at I2! on a bracket I28 secured to the printer frame.Lever I26 is provided with an arm I29 so conformed as to form a pivotalconnection for one end of a link I3I. The other 'end of link I3I ispivotally connected to arm I32 of a member I33 pivoted at I34 in aposition properly located with respect to the ratchet wheel II. vLeverI33 is of a U shaped conformation so as to provide a rigid bearing onthe pivot shaft I34 and is provided with a second arm I35 having anopen-ended slot which cooperates with a pin or stud I35 fixed to pawllever I31. Lever I3I is provided with a long arm I38, the end of whichcooperates with a pin I33 'on the spacing lever 64. The pawl lever I3!is also provided with a projection I4I which coacts with a projectionI42 on the detent pawl I5.

The spring H6 which tends to hold the bar H2 in a forward position witha shoulder I 43 against the portion II4 of the frame also tendstoholdflthe lever I28, link I3I and lever I33 in the position shown inFig. 2 with the tooth I44 of pawl I31 disengaged from the ratchet II.Then, when the back space bar H2 is actuated rearwardly by depressingthe finger piece II3 the bell crank lever I26 will be actuatedcounterclockwise to move the link I3I rightwardly, which thereby impartscounterclockwise rotation to lever I 33. This movement of lever I33is-transferred through the pin I36 to the pawl lever I31, thus bringingthe tooth I44 of the pawl lever I3I against the ratchet II.Substantially simultaneously with this action, theprojecti'on I 4| actsupon the projection I42 to rotatethe detent pawl I5 clockwise againstthe action of spring 11 to disengage the tooth thereof from the tooth oftheratchet "II with which it is engaged. With this action also the armI38 of the pawl lever I3I acts upon the pin I39 to move the prong 63 ofthe spacing lever 64 out, of operative engagement with ratchet II topermit backward (or clockwise) rotation of the ratchet wheel II.

Due to the action of the carriage return spring I3 which tends to rotatethe ratchet wheel II in a clockwise direction as shown in Fig. 2, the

:.ratchet wheel II is rotated only slightly or until the-oncoming toothI46 engages the pawl tooth I44. Then, when the finger piece H3 isreleased and the bar H2 is actuated forwardly, by the spring H6, thebell crank I 26 is rotated clock- -.wise.to move the link I3Ileftwardlyto impart Concurrently, the projection I 4| permits throughthe projection I 42, the detent pawl I5 to rotate counterclockwise bythe action of spring 1! to brin the tooth of the detent pawl I5 into thePath of the next tooth on the ratchet II so that vision-of mechanism forlocking thek'eyboaidi meant as thettooth I "w is Withdrawn froniengagement with teeth I 46' the pawl' li act'sto stop" the" mo tion ofthe" ratchet wheel 'llin a-clbckwise di rection when the oncoming-tooththereof en= gages the paw115'2 Through the instrum'entalityz ofthemechanism ijiist i described the" platen car riage I 8 can-be back-"spaced in correspondence withtheback spacing of the tap'e, since thembv'c The present invention contem lates them.

except: the rubout' key. (punching) and the} character blackout key?(prin'ting) fagainstop i eration when r the back spacingi operation is Ibeing performed, which lock remains e'fieeti ve untit all the backspaced code combinatka''ns have been rubbed? out, or'- cancelled;. by?perforating thre'i'.

over the all+markingflorrubout signal.- This a rang'ementis shownin'Figs; 6-," 7 3 8}and'10 'wher f p in the punch block 8 I is the sameas showninstar whee1 IIi8 which-' normaliyffilnetioris as "a detentWheel, as: indicated: in *Fi'gi' 21 Forthe purposesof the-presentinvention;the-'star -wheel" I 08 'is employed' to -actuate *wrack 'bar"3n2"whieh' is slidablyr. carriedin a? guide'meinber 3Il3 'whichf isprovidedwith: ae'cover plate3fldz The guide" member 303 andp1'ate-3M*for slida-bl'y' guiding the: rack. bar 302 Me -supported on the fram'emember 41 by means 'of a, bracketi305i The guidfe" member 303 an'd'pIate3flli'are further supported" at their right han'd endi las tviewedinFigsr 6" and 7 by-a support bracket 306 which is at'ta'ched' to thepunch block BI.

When the "rack 'bar" 3021s in -its left-hand" F Lid-' sition' the teethther e'dn normallyi bear -"ag'a'ihst the teeth of ithe star WhBBI I flathrough' the in'j strumentalityu of the springibiased' 'memberwlso*that*once the star-whee1-*"I08 counterclockwise direction;iduriiigithe back-' spa ing operation unden thezcontrolofthe backeba ber30! to cause rack bar 302 to follow in a righ H engagement-or meshingoftheWarious teeth; m

one step, to-the' right.

ment during :the forward flettward Fig: '7) spacing movementmt-the a'pAfter the ra'ek bai' 382? has been advanced the" full=:distafib towardth' right commensurate' witha the nu'mber bf teeth-"ontherack bar; theIzvr'elcket3-I'2,' -which'-issupported by w -a guide' 3 I 3 secured--to':the-iaciti;om :'si(1e-?of the member 303 andwhich-"engages a*'groove 3'l'4 on the b0tt0m side' ofthe rack bar- 30.24-as shown in?-Fig: 10)", willtbe 'engaged byathe rerid Wali=3.l5 0f" the grooveiiHI'which will-tendtour'ge the"bra"c et '3 l 2 rightwardly against''the 'actionef its spring 3 I-S; In this mannerthe'spmng' :3 I 6'thioughthe instrumentalityj: of the bracket- 3| 2 :"wilh tend to holdthe rack=bar teeth in engagement (in -a left'-- ward direction) againsti'the teeth of itheista-r wheel I 88- *to insure prop'er nieshingtor"engage Wiema m" a'i bracket fll on which is'pivotall'y mounted} at 318an indicat'or dial 319 which cooperates-With ah aperturefl-i' in thecover 322*of the printing apparatus. The indicator dial' 3'I9 is alsopro!- vided withan extension 323'Which cooperateswith theright-handend-of the rack bar 3532:

When rack bar 332 is actuatedrightwardly; it wilPup'on the firstcharacter space in" its movement;- cause the'indica'tor dia1- 313 to berotated in a counterclockwise direction to bring the" legendthreonbnamely; Rubout, into view through-the"opehing br aperture'32l inthe covi 322i- So long as the rack bar 3E2" is actuated rightwardiy-theextension 323- wili'continue' t6 ride' upon theupper surface ofsaid. rack bar to hold the indicator" dia1i3'I9-in its counterclock wiseposition with the "legend showing through the aperture 3 212 on v theother hand; when the r'aekuse 302 is actuated of returnedleftwardlyduring the nornial "letter sp acing of tape f eeding in'ov'eiiie'nt,theindication Rubout will appear through. the aperture 321 uhti1 the bar302 has reached its farthest left hand positiom where 1115011 th'ifidicatdi' dia l 3I9Wi11 be-rbt ated to" its clockwise pOSitiOfiWSI'iCiWI fifi Fig; 6)" dutb the extension 323 riding on of the top surfaceof-the racist bar- 302. The puip'qse pfthis' indicatioriis' maximise theoperator of the fact that so lon the-"word R'ub'o'ut appears*throughtheaert'ure 3 21 there arej'further c'ode combinations 'tii becancelled 'orrubbed out? The indicator; diaf 3I is 1 normal-1y biased in a" clockwisedirection; it's-viewed in Fig; 6; through the'instru'rnenta'lity ofa'torsion spring' 320*(indi'cated more clearly-m In cohnec'tioh with thefeature-0f lockingthe keyboafd a'gainstoperatioirwhilef the back spec:in g mechanism 1 is operate'd' and as long as the" Riibouti orcancellation"operation rojceedsi mete-image to-='the-ieed ro11 shaft IGfija' flanged sleev fmeinbeif'324f' "t ere 'isfreeiymouhtedbn' th' ieed-ro1rshaft1nt ad acent the' fian'gea'dis 324 'a -keyboard lotikin'g cams25 whichis re: cessd to ehibfaCe' -a. disc 'flof trictid'ri materialsaw-between thebain' member' sgs ah jd the nangjdfi disc -324S A sprinszif encbih assingkthe feed? rollf'shaft lqfi' 'isj 'compies sed betweenthe bracke 3'28and the 'cam az'stbfexert presstre upoif the cainf3 25andthe disc 324 to "render the-friction '-clutch"'effectivef I i I etesitijthe' dit fi' e r? n er 521 r11 i iete ri m i. re

32 9 brthe'eam'ns; osanne-debate'theumq r i ri f ruil y desciibed; in?thi'aiorinentioned The cam 325 is provided on its-periphery with asquareprojection or lug 345 which cooperates with the laterally directedextremity of arm 343 of a bell crank lever 34'1 pivoted at 348 on thebottom side of the punch block 81. Lever 341 is J spring biased in acounterclockwise direction by a spring 349. The lug 345 acts as a stopto normally'limit the rotation of cam 325 to substantially onerevolution so as not to prematurely unlock the keyboard.

. The operation of the mechanism disclosed in Figs. 6, 7, and 8 is asfollows: Assume that the tape perforating operation is proceedingnormally and the star wheel 193 is being rotated clockwise and the bar3112 is being urged to its left- Ward position against. the yieldingstop 31", and that further rotation of the star wheel 301 merely causesthe teeth of the star wheel to impinge successively against the teeth ofthe rack bar 302. In this condition of operation the lug 345 will haveattained and held the position indicated 350, and shown in dotted linesin Fig. 7. Lug 345 is held'thereat during further rotation of star wheel108 by reason of the friction clutch. The indicator dial 319 will assumethe position shown in Fig. 6, and the cam notch 329 of the cam 325 willreceive the cam follower 331, thus permitting spring 341 to hold theuniversal bar latch out of engagement therewith as shown in Fig. 8.However, assuming now that it is desiredv to back space the tape, theback space bar .112 will be operated repeatedly. By means of the backspacing mechanism shown in Fig. 2 the star wheel 103 will be rotatedstep by step in a counterclockwise direction (as viewed in Fig.;

dered extremity of the depending arm unden-c neath the universal bar 333to prevent its actuation, for a predetermined time, by the key levers,

34 2. Thereafter for one revolution of the cam 325 the follower 331 willbear against the face of the cam 325. Moreover, after the bar 302 has;been actuated rightwardly the, first step due to the interengagement ofthe teeth on the periphcry of the star wheel 198 and the teeth on therack 31l2, the indicator dial 319 will be actuated counterclockwise tobring the legend thereon into register with the opening 321 to apprisethe op-,

erator that the back spaced characters will have to be rubbed out beforehe can continue to operate the keyboard and thus operate the perfo-vrator in the normal manner. When back spaclog, the star wheel 108 andcam 325 will be actuated in a counterclockwise direction until the lug345 on cam 325 has moved from the normal position indicated 3511 to theposition indicated 3,45. .At this time the rack bar 302 will havebeenactuated rightwardly so that the end 315 of the.

groove 314 will actuate the yieldable stop memher 312 against the actionoi spring 313 thereby,

holding the teeth of the rack into engagement with the star wheel teeth.When it is desired to.

advance the tape to rubout or cancel the back spaced perforations, therubout key 20 (Fig. 1)

of the series of keys 342 (Fig. 8) will be actuated,

repeatedly, a notch being provided in the universal bar 338 to permitthe operation of. said key, in which case there is provided forsaid keya separate means for releasing the clutchncrmally controlled by the link:43; With this er rangement, the operator cannot operate any of the keys342 except the rubout key and this latching up or locking of theuniversal bail 338 guards against false operation of said keys. Theoperator, ofcourse} is further advised of the necessity of rubbing outor cancelling the perforated .code by the position of the indicator dial319. The lockout mechanism and indicator dial will be brought to normalafter the last character has been rubbed out, in which case the notch329 will have returned to the position shown in Fig. 6 so as to permitthe cam follower 331 to enter therein and release the latch 336 fromlocking. engagement .with the universal bail 338. The indicator dialwill again have returned to the position shown in Fig. 6.

In Fig. 9 is. shown an arrangement for preventing theoperation of theback space mechanism when theplatenwcarriage 18. is in its zero orbeginning-of-line position, after, for example, a carriage returnoperation has been consum mated. As also shown in Fig. 1 of theprincipal embodiment of the invention, the platen carriage is indicatedin Fig. 9 as 18 and is engaged by the carriage return strap 14 whichterminates in a carriage return spring housing '13. The housing '13rotates about apivot 351 and carries on the face thereof near theperiphery a blocking member 352, which is efl'ective when the carriagereturn housing is in the position shown in Fig. 9 (which is thatposition whereat the platen carriage 18 is in its beginnlng-of-lineposition). In this position the blocking member 352 acts to prevent theoperation of the back space bar 112 for the operation of the platen backspace mechanism; Accordingly, rotation of the back space 'lever 126about its pivot 12'! is prevented. Therefore, until the blocking member352 is removed from thepath of the bar 112 the back space mechanism forthe platen 13 cannot be operated. Thus,- after'the first character hasbeen printed on-the page and the platen 18 has been moved one characterspace (toward the left as viewed in Fig. 9) the blocking member 352 willhave been movedwith the rotating carriage return spring housing '13 oneangular step, which in accordance with the present disclosure issuflicient to bring the blocking member 352 out of the path of themember 112 so that thereafter the member 1.12 maybe readily operated bythe back spacing, figchanism, exemplified in Fig. 2, by the bar Undercertain operating conditions, it is desirable vto prevent back spacingof the platen 13 when the tape 93 is back spaced. Such a condition wouldarise,'for example, when the code signal combination (that is, "figuresshift or letters unshift) which was perforated in the tape did notrequire. thata letter spacing or character spacing movement of thespacing mechanism be imparted to the. platen 18. Thus, when the platenshift (figures)- or platen unshift (letters) code is perforated in thetape under the control of the selector mechanism 33, the mechanism ofthe printer 16 is such as described in the afore-mentioned Reiberpatent, so as to suppress the printing and character spacing op erationsof the mechanism since the noted code combinations are function codecombinations. In Figs.- 11, 12, 13, and 14 there is shown one method ofpreventing the back spacing of the platen 18 when the code combinationof the tape being back spaced is one that did not require theefiectuation of a platen spacingmovement. Having reference to Fig. '11,the punch block is indicated as "I51, :and is similar to the punchlblo'ck I' I I shown in "-Fig. 2. 'In accordance with this embodiment ofthe invention, a sixth hole is perforated in the tape automaticallywhenever a figures shift or letters-uns'hift code combination (or anyother desired code combination) is ito'be-perforated'. 'Then, when thetape is back spaced, a sensingmechanism is provided which automaticallysenses the tape to determine when l =a =shift-or unshift combination isback spaced, in which case the "back space 'mechanism of the platen I8.is prevented frombeing operated.

With the arrangement shown in *Fig. 11, there is also-provided a-sixthinterponent I52 which cooperates with the sixth punch I53. Interponent'I-'52 is 'pivotally articulated toa sixth selector'l'ever:I'54-,-"similar to selector levers 82 shown in-Fig. 2. Howeverylever I54is provided .with a depending bail portion -I55. levers 82, the lever154 is not provi'ded'with =a projection 85 which coactswith the transferbail I-, nor is it provided with a shoulder 86 which "cooperates withthe Telavers -36. Moreover,-the lever l54 is not provi'ded witha-spring'located such as spring 88 in Fig. *2, but I is provided with"a-spring 4 56 which normally biases the lever I 54 -in:acounterclockwise' direction' about pivot 83. -With this constructionthe-lever I54 is: caused .to rotate counterclockwise only when thefigures shift-and the -letters-'-shift (or other designated) codesignals are received.

The depending-portion 155 is conformed wit na. 2 U -shaped projection.as shown at f I '51 (Fig. 13) so thatthe lever ifi i can -be rotatedcounterclockwise in response :to the figures shiftsignal, which causesthe clockwise actuation of the No. "3 lever=82-arid the counterclockwiseactuation-of the Nos. 1, 2, 4, and 5 levers 82.- Inresponse to -theletters shiftail the-levers 82 are actuated *to their-counterclockwiseposition. Thus, upon :the receipt ofeither a figures shift or a flet:tersshif t=code combination theinterponent I52 willbeactuatedrightwardly to bring-its projecztion IP58 into the path of thepunchpin I53. The .apunchrpin. II53, instead of being slidably mounted.in the:.punch block I5I is slidably carried in a charIi59,':as:shown;in Fig. 1-4. The punch 153 provided .-with anenlargedend IEI which co- M :18 willt-be-gpreven-ted and if a sixth holeis not found in the tape, the back spacing of the platen IB will be:eiiected-simultaneously with .the :back spacing of the tape. vThe backspacing-bar. IE?! is slidably supported in the punch block .I5I andinabracket I69 (Fign12). AspringJ'I'I encircles the-bar -I 6 1 and iscompressedbetween t'heibrack- -et I69 and a flange :I-12 :integralto thebar I 6 whereby the bar I6! is normally held-in its left- :wardposition. asriviewed: in Fig. :12. Bar 151 is :also provided with:narrowed or restricted .porztion I 13 which :is spanned by the forkedlower .endxo'f alever 411-4 pivotaily mounted at I15; the .upper-endof-whichiis provided with-a slotted hole .to:permitthei-bartlisifttosextend therethrough. A

Unlike selector spring 1 I! 6. encircles theibar I 59 and-is. compressedbetween the-upper endof lever I:"I4..(and.collar H0). anda flange -I=I|integral with the bar 159. The .right-handendotsbar I59 (as v.viewedinFig. .12) pivotally articulatedto the upper. end 10f the verticalar-m of:abeli crankzlever I18 piv- .otally amounted at 4:19. horizontal arm of:bellv crank. I218 cooperates with :the flange li'I ZOf the b-ar I51.

The extremity- 01 the When the back space ,bar :IfiIis :depressed byapplying pressure to the finger pi ece I18.I it imparts counterclock-;wise rotation to lever I14: (as .viewed in Fig.1 2)

thus-tending to. urge, through spring 3 I 15, 1 the bar 1.5.9 leftwardlytozbrin'g the sensing pin liiakinto sensing relation withthetape I55.-.During-this rhammerJIBS Which is pivotedat I Hi'. 'With thisarrangement, the actuation of the punch hammer H 63 in a clockwisedirection (as viewed-inFiguli) with the interponent I52 positionedwith'its pro- .iection: IE8 in alignment-with the punch iii's-wiil.xcausethe punch :to. perforate the tape I65 in the sixth. hole.position. :Then, when the punch ham- ;mer: I153 is rocked 'inacounterclockwise direction, the head I6I will be engagedlby themember'IM "to withdraw the punch-'I 53- from the tape-I65-.

'ln thisaembodiment of the invention, theb'ack -:spacing and forwardspacing mechanisms are exemplified bythe -feed 1 011166, and may takesubstantially the form as shown in Fig. 1-5. 'After :thepunching-operation has been performed; the

.,tape 165 wi1l'-be advanccd leftwardly, as shown Z'.1n? Fig."i11,1one'step" by the operation 'of the tape steed pawl (not-shown).

' W-hen the back spacing operation is tobe perfor-medby the depressionof the back spacing bar l51- 3$iWfll presently appear, the-bar i 59 isoperated in a'manner to permit the sensing pin I68 "integral: therewith:tosense the" tape-for the presencepr: absenceotasixth hole. 1 If asixth hole is i tpundin the tapeg the back spacing ofthe-platens";.t'her movement rightwardly of-the barels1r viewed in Fig. '12).Rightwardmwement being .Lthus, impeded, .the bar. I82, which iscomparable to. the ban II 2 of Fig.-2- will not be operated, and.hencethe back spacing mechanism of: I8..wi1l not. be operated. I

. tion ;-between the sensing pin.

probing. operation; the :back spacing of the tape will ,be :delayed',since the backspacing mechanism is in 1 principle: similar: toe-thatshown in Fig. .15. ilfiazperiorationis.-found by the .-pin,-I68.in:thesixthposition: of; the tape L65, the sensing pin I68 Will-passtherethrough and permit the bar- 159 to move a predetermined amountleftward-1y. In

this event,x;th,e; bar. I159, through. its pivotal articulationwiI ;hlever' 1-18 will causethe bell crank lever 17:8 .:to rotatecounterclockwise .-about pivot I13 toqbli ng I hfii end-of itshorizontal. arm -into 4 the M 73 .Of ,theayfiange1ilz .OIIathe back.space bar ,2 I 61. It is, ,of course, understood that the. space betweenthe flange lfl-landzthe end of the horizontalarm of'lever: IIIi-issufficient to permit the back :snacin .rnemher I161 to be moved.rightwardly -a distancesufiicient to :eifectuate thesensing opera- .4168and-the tape I65, asawell astoeffect: theback: spacing operaation-.Moreoventhe distance betWeen-the-erid Q hesbar 1 l 61 and the. end; of.the bar I32 issalso sufiicient to :permitthe effectuation of these--opstations. That is, .the space. indicated 1 834s sufficiently; greatto permit a. preliminary testing pmovementi of 'thesbar I61 to determinewhether .apertorationa in thesixth-positionhas been found Why :thesensing pin I 68, .and. to effect the 1 back spacing operation. It isobserved that thepositioning of athe horizontal arm. of the lever Ininto; the path-10f the. flange: I12 will. prevent furtheplaten:Howevendf .there-pis no perforation in register with. the sensing pinI68 in. the sixth-position rof-theztape, therbar: I59 willonly bemoved-a limiteddistance so as to bring the pin I68into contact with thetape I65. Thereafter upon furend of its horizontal arm mm the patent theflange I12, thereby permitting further movement of the bar I61 so astotake up the space I83 and bring the bar I61 into contact with the barI82. Thus, upon further rightward movement of the bar I61, the bar I82will be actuated rightwardly to effect the operation of the back spacingmechanism for the platen I8, as previously shown and described.Provision has been made for permitting the operation of the back spacingmechanism. for the tape I65 while the sensing pin I68 is engaged in :asixth hole in the tape. To achieve this result, -the' die plate I84 forthe sixth punch I53 is a .slidable member carried in the punch plateI85. The punch plate I85 is provided with holes I86 to cooperate withthe normal code punches (comparable to punches 89 in Fig. 2); but, forthe .;sixth punch I53 a slotted hole I81 is provided,

. smthat the feeler pin I68 in penetrating the tape can move the plateI84 to bring the hole therein ;-into alignment with the code punch holesI86. .In-other words, when a hole is found in the sixth :;position ofthetape by the pin I68, and a back ;spacing operation is performed with thepin I68 :in this position, the back spacing of the tape will mot beopposed since the bar I59 is permitted to srotate a slight angularamount in a counterclockiwise' direction so that the pin I68 can move;;rightwardly (as viewed in Fig. 11) to the posistion in alignment withthe punches I86 (since .it is understood that the tape after the punch-.ing operation, previously described, is advanced -;one space in a tapeadvancing direction). A ;-spr ing N38 isprovided to hold the slidabledie ;plate I84 in its leftward position, as viewed in 3mg. i

.- Another modification of the present invention qisshown in Figs. 15 to19, inclusive, and contem- ;,plates the control of the platen backspacing ,mechanism under certain operating conditions to prevent theoperation of the platen back spac- ,i ng mechanism by means of a devicefor sensing the complete code combination instead of merely a hole inthe sixth position in the tape. Having reference to Figs. 15 to 19,inclusive, the punch block is indicated as NH, and is provided with a.plurality of punches I I92 operable between ,guide plates I93 and I94.7 A die plate I is spaced from theplate I94 to permit the tape I95 topass therebetween. The punches 192 are provided with an enlarged endwhich cooperate with the portion I96 of a punch hammer I91 pivoted atI98. A series of interponents I99 are operated in the manner describedin the principal embodiment of the invention to bring the pro- ;jection20I thereon into or out of registration with the punches I92.

Upon each operation of the perforating mech-- .:anism the pawl 202pivoted at 203 at the ex- -tremity of the tape feed lever 204 isreciprocated to impart clockwise rotation to the tape feed ratchet 205,the pawl 202 being normally biased in a counterclockwise direction tokeep the tooth ,Jzhereon in engagement with the ratchet 205.

The ratchet 205 is integral with a tape feed shaft 206 to which is alsosecured the tape feed roll 5 201. Clockwise rotation of the feed roll201 will cause the tape I95 to be advanced leftwardly, as

- viewed in Fig. 15. Now, when the letters unshift and ifactthat the,tape I95 is spaced. Therefore, when it is desiredto backspace the tape I95; it is not necessary to effect the back spacing of the platen I8 ifthe code combination being back spaced in the tape is a figures shift orletters unshift code combination (of course, other combinations can beemployed).

To achieve this result, a sensing lever 208 is provided which is pivotedat 209 to a bracket secured to the punch block I9l. At the extremity ofthe arm M I of the lever 208, a series of sensing pins 2I2 are carried,which are guided between the plates I93 and I94 and which are spring!loaded so as to cause them to press against the arm M I, so that whenthe arm 2 is caused to rotate slightly in a counterclockwise direction,the springs 2 I4 will cause the sensing fingers 2I 2 to press againstthe tape I95 if no perforations are sensed in the first, second, fourthand fifth code position, simultaneously (which is the figures codecombination). Lever 208 is also provided with an arm 2I5 which carriesthereon in spaced relation, a pair of adjustable studs 2L8 and 2H.Cooperating with stud 2I6 is a plate 2I8 carried on the back space bar2I9. Stud 211 cooperates with a bell crank lever 22I which is pivoted tothe platen back space bar 222 at 223. Bell crank 22I is normally biasedin a counterclockwise direction about its pivot 223 by a spring 220. Theplaten back space bar 222 guided at its forward end by a shoulder screw2I0 engaging a slot 220 in the bar 222, theslot 228 being of sufiicientlength to permit the screw 210 to reciprocate therein without impartingmovement to the bar 222, since, as will'presently appear, the bar 222 isreciproc'ated'under the control of lever 22I and a spring 230. The: stud2I6'cooperates with a two-level notch 221 in plate 2l8 and normallyrests upon the upper level 226 ofthe notch 221. Now, when the back spacebar 2 I9 is depressed by applying pressure to the finger portion 228 theplate 2 I8 will be moved rearwardly, as viewed in Fig. 15, to cause thestud 2I6 to fall from the upper level 225 to the lower level of notch221due to the pressure applied by springs 2I4 upon the arm 2 if the sensingpins 2| 2 havefou'n'd perforations in the tape I95 in registertherewith. This position is shown in Fig. 18, where it isseen that thestud 2 has caused the lever 22! tobe rotated in a clockwise direction soas to cause the shoulder 228 thereon to be moved out of the path ofshoulder 22!! on the back spacing. bar 2I9. Upon further movement of thebar-2I9 rearwardly, the stud 2I8 will ride up upon the inclined surface23I of plate M8 to cause the lever 208 to rotate clockwise to retractthe. sensing pins I2 from the perforations in the plate I95 preparatoryto effecting the actual back spacing operation of the tape.

At this time, when the lever 208 has been rotated clockwise, the pawl232 effecting theback spacing operation of the tape I95 will havetraveled from the solid line position shown in Fig. 15 to the dottedline position 233. So, when the bar 2I9 is fully depressed, the pawl 232will act upon the back spacing ratchet-234, which,

through the feed roll 201 will eifect the back spacing of the tape I95.It is noted that since the lever 22I has been, during the precedingoperation, rotated out of operative relation with V the shoulder 229,the bar 222 which is connected to the back spacing mechanism of theplaten I8 has not been operated. ,It is, ofcourse, understood thatclearances and motions between the various elements are contemplated,.such that 17 the probing and sensingoperations and the conditioningoperations pursuant'thercto are consummated before theback spacingoperation is initiated. Upon the release of the back space bar 2|9 it isreturned to. its-forward position by tion as shown in Fig. with the pins2I'2 bear-.-

ing against the tape I95 so that when the back .space bar 219 isdepressed the shoulder 229 thereof is free to engage the shoulder 228oibell crank lever 22! to impart rearward motionto the platen back spacebar 222. The back spacing of the tape is performed throughtheinstrumentality of the pawl 232 andthe back spacing ratchet 238.. It isnecessary to prepare for this operation by disengaging pawl 202 from theratchet 255, and to achieve this result an arm 231 is provided on: thepawl lever 232 which cooperates-on the cam arm 238 on the pawl 202 sothat as the pawl 232 is operated rearwardly bythe lever 219 (to. whichit is pivotally connectedat 239 on the extension 2M), the arm 231' willurge the pawl.

arm 292 in a clockwise. direction against the action of its spring 262.to withdraw the pawl tooth from the ratchet 205. The arm 2 H of bellcrank lever 268 is provided with. an opening 243 (Fig. 1'7) sufiioientlylargeto permitthepunches I92 to extend therethrough, andhas a. pair ofslidably carried betweenguide plates 2 52. and

\ The punches 254. are provided with enlarged. endswhich coop- 223 aseries of punches-254.

crate with the member 255 of the punch hammer 2.58 which is pivotedat.f251.. A series of interponents 259 are provided which are controlledby the sensing mechanism, as disclosed in. the principal embodiment, tobring the projection 253 into or out of the path of the punches 254 toeffect their operation. Mounted on the punch block 25.: is a lever,indicated generally as 26l, which is pivoted at 262. The horizontal arm2.63: of lever 26I carries at its extremity. a series of sensing pins264 which cooperate with a series of holes adjacent to thepunch holes inthe 'die plate 265. Bell crank lever 26l' is also provided with an arm26.6 whichispivotally articulated at its free. end to one endof a link261'. The other end of link 261' is provided with a slot 268 whichcooperates with a stud 269 on a latch arm. 21! carried. on the backspace bar 212. A sprin .213 extends between. the stud 269 and the endvof lever arm 256. Backspacing bar 212 is provided with an extension 2114on which are mounted members 215 and 216 which control the operations ofthe bell. crank level 26 as will presently appear. Lever 266'i'sprovidedf'with an arm 280 secured toa bracket. 284. fixed tothe.pnnchrblock;

spacing fea-; 5.

L Also slidably guided by the stud 283 .is the bar 285 which governs theoperation of the platen back space mechanism shown in Fig. 2.

The operation of the modification shown in Figs. 20 to 23 is as follows:The perforationof the code combinations in'the tape is governed by theoperation of the interponents 258 under the control of the selectormechanism, bringing the projections 259 permutably in alignment with thepunches 254 sothat when the punch hammer 256 is operated, the tape 296is perforated correspondingly. When it is desired to back space the tape286, the back space lever 212 is depressed or operated by applyingpressure to the finger piece 281.

During the initial portion of the rearward movement of the. back spacebar 212, the memher 218 will be moved away from the arm 289, permittingthe springv 2-11 to rotate the lever 26l in a counterclockwise directionto bring the sensing pins 264 into contact with the tape 286. *Aspreviously described, there are four sensing pins 264 arranged in thefirst, second, fourth, and fifth code positions corresponding to thefigures or shift code signal. Ifthe sensing pins 266 are blocked in oneor more of thecode positions, the lever 2M will not be rotatedcounterclockwise sufiiciently to actuate the link 261 to rotate thelatch 21] out of the path of shoulder 288 of bar 285. Thus, upon furthermovement of the bar 212 rearwardly, the pawl 289 will engage the ratchet29! to rotate thefeed roll counterclockwise one angular step to effectthe back spacing of the tape.

If perforations are in alignment with the sensingpins 264 in all of thefirst, second, fourth, and

fifth code positions, the: lever 26! will be rotated sufiiciently by thelink 261'to cause the link 2%! to disengage thelatchfll from theshoulder 288.

23, the lever 26! is rotated intothe position shown with the sensing pin264' into the perforation of the tape, thus permitting the lever 2.61 torotate sufficiently toactuate the link 261 to. rotate'the pawl 2' out ofthe path of the member 235. When the back space bar 212 is furtherdepressed, the member 215 coasts with the projection 219 to rotate thelever 26l: in a clockwise direction to withdraw the sensing. pin 2641mmthe perforationin the tape thus stretching the spring 2% and returning.the link 261 rightwardly to the dotted line positionshown in Fig. 23.The arm 215 will not return to its clockwise positionbut will beheld inits. position shown in Fig. 23 so I that when the back space bar 212-isdepressed the full amount, the pawl289 will engages the back spaceratchet 291 and. back spacethe tape, and the bar 285 will not have beenoperated so that the platen is not back spaced during this oper- ,ation.The spring. 293 functions to'return the back space bar 212- to its.forward position. In Yo.

. pawl 292 of the normal spacing mechanism disengaged from its ratchetin the manner shown operating the back spacing ratchet 291, the feed inthe embodimentillustrated in Fig. 15.

operation under certain conditions of operation.

For example,- when the apparatus has been operated in the figures shiftor upper case position and it is desired to back space certain of thecharacters for cancellation, the mechanism according to Figs. 24 and 25provided to remind the operator'to return the type wheel to the figuresshift position after the rubout or cancellation operation-has beenperformed, because during the cancellation or rubout operation the boardagainst operation, thereby locking the keyboard. In this condition ofoperation only the rubout key can be actuated following the back spacingoperation, and if the type wheel was in the upper case position beforethe back spacing operation took place, the operator is reminded to; 257

return the type wheel again to the upper case position because of thefact that the keyboard is locked against operation and the operator isthereby unable to continue operating the apparatus in the normal manneruntil the type wheel is so returned. In this manner, erroneous operationis prevented. g

In Fig. 24 the punch block is indicated as 353 and the back spacing baris indicated as 354, these elements being substantially identical to thecor-w 35:

responding members shown in the illustrations previously described.Mounted on the back spacing bar 354 is a stud 355-which cooperates withthe vertical arm of a-bell crank lever 356 pivoted at 356. To, theextremity of the-horizontal arm of the bell crank lever 356 is pivotallyconnected the upper end of a, link 351. Pivotally mounted at the lowerend of the link 351 at 353 is a lever 359. Adapted to cooperate with theright-hand end of 'the universal bail 319 is a link 382 which functionsto release the clutch (not shown) for gov- 365 (Fig. of its horizontalarm into contact with the lower edge of a key lever 386. The link 351 isnormally urged downwardly by a spring 381 secured to a stud carriedthereon (Fig. 25).

Operation of the mechanism shown in Figs. 24 and 25 is as follows?Assume that the tape is being perforated and a record is being made uponthe page, with the type wheel 361 in the upper case position, indicatedby the dotted line 369 in Fig. 25, and that it becomes necessary tocorrect a portion of the record thus made. Accordingly, the back spacingbar 354 will be operated successively the required number of times toback space the tape an amount corresponding to the material to bedeleted. Upon the first operation of the back space bar 354 rightwardly,as shown in Fig. 24, the stud'355 thereon will operate bell crank lever356 clockwise to raise the link 351. Since the type wheel shift member356 is in the upper case position, the lever 362 is positioned with itsarm in the position shown in dotted lines 31!, with the lower extremitythereof in the path of the right-hand end of lever 359.

. Thus, when link 351 is raised, lever 359 will rotate about the lowerend of lever 36l in a clockwise direction, causing the left end of thelever 359 to pivot the arm 312 in a counterclockwise direction againstthe action of the spring 315.

i This movement of lever 312 will permit the upper end of the lock lever316 to be freed to respond to the pull of its spring 318, whereby thelatching lever 316 will be rotated counterclockwise to bring the lowerend thereof below the universal bail blade 389. In this condition, thekey levers are locked against operation due to their inability to rotatethe universal bar 319 counterclockwise.

lever 359 (as viewed in Fig. 24) is the vertical arm 36| of a bell cranklever 362 which is pivoted at 363. Lever 362 is normally biased in'acounterclockwise direction (as viewed in Fig. 25) against a suitablestop by a spring 364.

The horizontal arm of bell crank lever 362 operates upon a bracket 365secured to the type wheel shift frame 366. j The type'wheel 361 isslidably mounted on the type wheel shaft 366 for reciprocation betweenthe full line position shown in Fig. 25 and the dotted line position369.

When the type wheel shift member 366 has been elevated to the figures?or upper case positi dic ed the bellcrank lever 362 will be rotated tothe dotted line position indicated The locking of the keyboard in thismanner has been rendered possible by the fact that the type wheel shiftmember366 is in the upper case position, thus holding the lever 362 inits counterclockwise position -(shown dotted in Fig. 25)

against the action of spring 364 to bring the depending arm36l into thepath of the lever 359. When the deleting or rubbing out operation is Ibegun, the first rubout signal will act in the man her of a letters orunshift signal in addition to its effect of rubbing out or cancellingthe code at 31!, in which position the vertical arm of lever .60

- 362 will act'to block counterclockwise rotation of bracket 314.Lever-312 is normally biased clock-- wise by a spring 315. Lever 312 isprovided with 7 shown in full line in Figs. 24 and 25, thus permittingthe spring 364 to return or rotate the lever 362 to its counterclockwiseposition, as shown in Fig. 25. As described, the keyboard is lockedagainst operation during the rubout or cancella tion operation.

After the cancellation operation has been completed and the operatorwishes to continue to prepare the record or to write the correctedmatter a shoulder which cooperates with the upper end of a locking lever316 pivotally mounted on a pivot shaft 311. Leve'r 316 is normallybiased counterclockwise by a spring'318. The lower end of lever 316is'provided with a lateral projection he will attempt to operate thekeyboard in the usual manner but will find that he is prevented fromdoing so because the universal bar 319 has been'locked up, This warnsthe operator that he must return'the typewheel to its "figures shift orupper case position, shown in dotted lines in Fig. 25. Before he can dothis he must unlock 1 position, as will presently appear. Articulated to15- the keyboard and to'accomplish this result a specialkey (notshownl-is provided which is notched aiter by. the'; keys 386..

above.:theuniversal= bar: or whichis.- positioned :outside oi: the rangeof operation the:univer- 'sal bar. This special key lever actstorrotatew the .pivot shaft an, to which is: also: fixed. the bell cranklever. 38-3; ina: clockwise direction against :the' action: of itsspringifl;

-ci'al key, the figures or shift code signal. will be transmitted, theeffect: of which. upon the: printer unit will be to shift the member 3%again: to the .dotted line: position,. shown-.in Fig;

r In. Figs. 26:-and 2.7 there: is shown anarranges ment for markinei thetape while'performingsthe back spacing. operation; to indicaterto.operapivot 393 due to'a torsion. spring 390: associated therewith; Theleft; end of. the lever" 394-sl'opes upwardly toward: the left andcooperates-with. a

stud:- 395 carried on a bracket 396 secured to'the punch block 391.. Theright end oft'thesleverxiifl is provided with a latch. portion whichcooperates with. the lower end of the resilient: portion-or a dependinglever 398- pivoted at 399*tofa bracket 401: secured to thepunch block3.9T;- Lever 398 is normally biased in a counterclockwise direction.about the pivot 399 by aspring 402;. which rotation is limited by a.stop dlis". The lever 39! is also provided with a. laterally andinwardly-directed arm 404,: which carries at itsextremity: a

printing pad: 405,.fo1' the inking. 01'. which suitable provisions maybe made; The die plate lflfi of the punchblock 3-91 is-provide'd-with' aspecial aperture 101 through which the printing pad 405 isoperative,and: through which the. operator may view the markingsmade by theprinting: pad

405 upon thetape;

In operation, the mechanism for marking'the tape is normally in the'positionshown in. Figs: 26

.and 27, so that whenthe backspacing. operation is to be performed theback: space bar 391 is I depressed (operated leftwardly, as viewed in:Fig.

2'7) and through the mechanism indicatedzinFigs. 26 and2!7 as 40 8, the:tape back spacingmechaanism is operated in the manner-described. inconnection with' Fig. 2. The latch. lever 384, also the level 394" isrotated clockwise" torelease' the r latching end from the resilientdepending arm of :lever 3-9l'to permit the spring 462 to'retumthe--l'ever RB-counterclockwise againstthe; stop 403. :Asthe backspace-bar39'! is then fully depressed,

the tape is. back spaced through. the instrumen- -talityoft-heimechanism indicated aa'flm. and the mark; just. madeon the tapeappears; through the opening-401; Thereaftem whenxthe cancellationordeleting operation: is: performed the marks appea-ring throughsaidgopening 4-01 will apprise the operator of the number ofcombinations to: be

deleted: v

In- Figs. 28 and. 29 isillustratedan alternative method for indicatingto the operator'when the" back spaced code combinations have been rubbedoutlon'deleted'. In this arrangement, an electric lampiis. provided inthe. punch block, and the lightfrom the lamp will project through theper:-

iorationsz in: the-tape; where it will engage. the. at:-

tenti'on of the-operator and apprise himvtliat there are more backspace. code combinations to berdeleted; IniFigs'. 28 'and 29 the punchblock-is indicated-as; 4 H and-the punches as HZ'. The die-1plate:4 lidsprovided: with an opening or aperture' 4M substantially the: width ofthe tape. and embracingone transverse row of perforations. This:aperture M4 opens into a recess M5 in the punch block-z ML Covering thefront of this recess: 41-5 is a: plate M6- on. which is mounted asupport: 411: for an: electriclamp H8; The lamp lzl 851s, of course;illuminated continuously and-the lighttherefromyis: emitted through theopening Mia-only when there are perforations in the tape thathave notbeen deleted; at'al'l times thereafter the opening 414 will beobstructed by blank tape.

A-slide-39vl= (Figs. 1, 2', and 3) is provided'for disabling the normal.tape feed pawl H12 by disengaging it: from the ratchet I'M andholdingfit disengaged, when it is desired tothread a new stripeof 'tapeinto: the punch'block or to quickly withdraw a section of tape. Slide39;! is suitably guided slidably; with respect to the-punch blocks! andthe tape feed mechanism, andv is provided with a vertical portion 392:which cooperates: with extension-3-93-on.the pawl I 32. Slide 39! isalso provided-with a. finger portionv 3'94; and an indicator pointer;395 integral; therewith; Pointeri-SS cooperates with a suitable:legendary member (not shown): to visually aprise the operator of theoperating. condition of the perforator.

Although specific embodiments of the: features of invention have beendisclosed and described herein,- it. wilt be understood. that theinvention-is not. limited to. such specific embodiments, but is capableof: modification, reorganization, rearraneement and substitution ofparts and elements withoutdeparting from.- thespirit of the inventionand within'i theiscope: of the appended claims.

Whatiscl'aimed is:

I 1.. In azrecorderat an initiating station, signal responsive. selectormechanism, printing instrumentali'ties and" perforatinginstrumentalities controlled by said" selectormechanism in response to.signalsto produce corresponding records on independent: Webs;independent spacing mecha ni'smsassociated "with sai'd printing and saidperforating.instrumentalities, said spacin mechanisms effective.as'anincident-of the printing and perforating operations to effeotsimilarresponses ill) said printingjand perforatinginstrumentalities,

means toreverse the actions of said spacing mechanisms simultaneously toeffectuate corre 'spondingreverse movements in said webs,'and

means effective under certain predetermined con-- ditions: of reverse?operation for suppressing the operation of the spacing mechanismassociated with the printing instrumentaiities while enabling the:reverseaoperation or the perf'crator spacing mechanism.. 1 v

2;. In; aha-initial recording apparatus, a carriage movable to formcharacter "spaces, means for mov- I 23 ing said cariage, perforatingmechanism, means for causing a predetermined similar-response in saidcarriage moving means and in said mechanism simultaneously, meanscapable of causing simultaneous reverse response in said carriage movingmeans and said mechanism, and means effective under certain operatingconditions to limit said reverse response to said perforating mechanism.a

3. In an initial recording apparatus, printing instrumentalities andperforating instrumentali ties for producing corresponding records onindependent webs, independent spacing mechanisms associated withsaidprinting and said perforating instrumentalities,- saidspacing mechanismseffective as an incident of the printing and perforating operations toefiect similar responses in said printing and perforatinginstrumentalities, means to reverse the actions of said spacingmechanisms simultaneously to effectuate corresponding reverse movementsin said webs, probing means operable upon each operation of saidireversing means, and means efiective under the control of said probingmeans in response to predetermined conditions in the perforated web tosuppress the operation of the spacing mechanism associated with theprinting instrumentalities while enabling the operation of theperforator spacing mechanism.

4. In an initiating recorder having printing instrumentalities andperforating instrumentalities for producing corresponding records onindependent webs, a plurality of code elements, means for setting saidelements in predetermined combinations, means responsive to saidset-tingto produce a printed record on a certain one of said ,webs, a pluralityof punch controlling elements movable into selective positionindependently of said code elements, means effective solely to governpermissively the selective positionment of said :punch controllingelements in accordance with *the setting of said code elements, meansefiective under the control of said punch controlling elements toproduce apertures in the other of said webs corresponding to theselective positionment of said punch producing elements, independent.-spacing mechanisms associated individually with {said printing andsaid perforating instrumentalities, said spacing mechanisms effective asan incident of the printing and perforating operations, respectively, toefiect similar responses in each operation of said reversing means, and

means effective under the control of said probing means in response tocertain predetermined code combinations of apertures probed to suppressthe operation of the spacing mechanism associated with the printinginstrumentalities while enabling the. operation of. theperforatorspacingmecha nism.-

5. In an initiating recorder, printing instru- ,mentalities comprisingplatenumeans and typing means, escapement mechanism for effectingrelative movement between said platen means and saidtyping means, signaldetermining means,

strip moving means in said signal determining -means, means for causinga predetermined simi- 7O lar response in said escapement mechanism and Isaid strip moving means, means for causing a reverse response in saidescapement mechanism ,and said strip moving means, and probing meansmeans for precluding the operation of said escapement mechanism undercertain predetermined conditions.-

6. In an initiating recorder, a platen,- typing means; means foreffecting relative movement be tween said platen and said typing means,a tape perforator, tape feeding instrumentalities in said -perforat'or,means for causing a predetermined similar response in said first recitedmeans and said tape feeding instrumentalities, means for causing areverse response in said first recited meansand said tape feedinginstrumentalities, -'tape sensing means operable upon each operation ofsaid reversing means, and means effective under the control of saidsensing means for'precluding the operation of said first recited meansreversely when reverse operation is imparted to said tape feedinginstrumentalities.

7. In an initiating recorder, a signal responsive selectona printingmechanism and a perforating mechanism controlled by said selector torecord characters corresponding to received signals in one web and toperforate equivalent signals in another web, a back spacing deviceoperable to back space both webs simultaneously preparatory t0 deletinga printed and perforated character, and probing means to render saidback spacing device ineffective to back space said printed recordreceiving web.

8. In an initiating recorder, a carriage movable to formcharacterspaces, means for movingsaid carriage, perforating mechanism, means tomove the tape with respect to said perforat- .ing' mechanism, means' forcausing a predeter mined-similar response in said carriage moving meansand in said tape moving means simultaneously, means for causingsimultaneous reverse response in-said' carriage moving means and saidtape moving means, and means for im'- parting said reverse response toonly said tape moving means.

- ,9. In anrinitiating'recorder, a signal responeffectuate correspondingreverse movements in said webs, and means operative under certainoperating conditions to render said spacing machanism associated withsaid perforating instrumen-' tality eiife'ctive and the other spacingmechanism ineifective to eiiectuate said reverse movement.

10. In an initiating recorder, printing instrumentalities comprisingplaten means and typing means, mechanism for efiecting relative movementbetween said platen means and said typing ,rneans; signal determiningmeans, strip moving means in said signal determining means, means forcausing. a predetermined similar response in 1 said mechanism and saidstrip moving means, means for causing a reverse response in saidmechanism and said strip moving means, probing means operable upon eachoperationof said re- :versing means, and cam means for controllingtheeifectiveness of said probing means, whereoperable upon eachoperation of said reversing 75 ,by inresponse .to a predeterminedoperating condition, the operation of said platen reversing mechanism isprevented.

11. In an initiating recorder, a signal responsive selector, a printingmechanism and a perforating mechanism controlled by said selector torecord characters corresponding to signals in one web and to perforateequivalent signals in another web, a back spacing device operable toback space both webs simultaneously preparatory 26 to rubbing out aprinted and perforated character, probing means, and cam means forcontrolling the efiectiveness of said probing means, whereby in responseto a predetermined operating condition, the operation of the spacingmechanism of said printing mechanism is prevented.

EMILY Y. REIBER. Ewecutria: Under the Last Will and Testament of AlbertH. Rez'ber, Deceased.

